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  • Polytetrafluoroethylene (PTFE) is used as a non-stick coating on cookware. Teflon is the most well-known brand name of PTFE-based coatings. When PTFE is heated to high temperatures, it releases toxic particles and acidic gases that are toxic when inhaled. Birds are particularly sensitive to inhaled toxins or poisons and can be poisoned by PTFE even if they are not in the same room. Sadly, sudden death may be the only sign of PTFE poisoning.